Safety-Rated Interlock Switches

Safety rated interlock switches are safeguarding measures designed to improve safety in situations where guards or gates are used around hazardous machinery or equipment.

What are safety rated interlock switches used for?

In industrial situations, safety rated interlock switches prevent or permit the use of machinery, depending on safety conditions. They allow current to pass to the machine when it is safe to operate, for example when the machine's guard is closed. And they cut off the power if there's a potential hazard, such as a guard being opened. When a dangerous piece of equipment such as a metalworking machine is in operation, safety rated interlock switch might be used to ensure safety gates remain closed, excluding workers from hazardous areas.

Types of safety rated interlock switches

Safety rated interlock switches vary according to their lock type, maximum current and voltage, as well as their housing material. Guard-locking switches prevent access to machine parts that may still be in motion, even when the power has been cut. Hinge switches will close protective gates and guards in unsafe conditions.


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Description Prix Connection Type Lock Style Normal State Configuration Housing Material Maximum AC Voltage Maximum DC Voltage Safety Contacts Range Actuator Included Lock Type Number of Head Directions Series Auxiliary Contacts Depth
N° de stock RS 277-2123
Référence fabricant440K-H11145
277,00 €
Each
Unité
M20 Key 2NC Glass Filled PBT 240V 250V 2NC Trojan 5-EX Yes - 4 440K - 52mm
N° de stock RS 252-3864
Référence fabricantXCSPA591
39,10 €
Each
Unité
- Key 1NC/1NO Polyamide 240V 250V - Preventa - - 8 XCSPA - 30mm
N° de stock RS 427-1127
Référence fabricant440K-C21061
44,30 €
Each
Unité
M16 Key 2NC/1NO Glass Filled PBT 600V 600V 2NC Cadet 3 Yes - 8 440K 1NO 30.4mm
N° de stock RS 623-3076
Référence fabricantAZ16-12ZVRK-M20-2254
MarqueSchmersal
34,10 €
Each
Unité
M20 Key 2NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 2NC - - - 3 AZ16 1NO 30mm
N° de stock RS 305-1966
Référence fabricantXCSPA791
39,10 €
Each
Unité
Screw Key 2NC Glass Fibre Reinforced PA 240V 250V - Preventa - - 8 XCSPA - 30mm
N° de stock RS 757-9231
Référence fabricantD4NS-1BF
MarqueOmron
23,09 €
Each
Unité
Screw Key 2NC Plastic 240V 250V - - - - 4 D4NS - 30mm
N° de stock RS 746-7292
Référence fabricantD4NS-4AF
MarqueOmron
23,09 €
Each
Unité
Screw Key 1NC/1NO Plastic - - - - - - 4 D4NS - 30.6mm
N° de stock RS 826-3880
Référence fabricant208026
MarqueIDEM
348,47 €
Each
Unité
Cable Key 2NC/2NO Stainless Steel 240V - 2NC/1NO Kobra - - 4 K-SS-Ex 1NO 37.5mm
N° de stock RS 410-7206
Référence fabricantSKI-U1Z M3
MarqueBernstein AG
31,26 €
Each
Unité
Screw Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 240V - 1NC/1NO - Yes - 4 SKI - 30.5mm
N° de stock RS 211-1499
Référence fabricantAZ 17-11ZI-B5
MarqueSchmersal
53,80 €
Each
Unité
M16 Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 1NC - - - 4 AZ17 1NO 85mm
N° de stock RS 744-8673
Référence fabricant570230
MarquePilz
32,63 €
Each
Unité
Screw Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 240V - 2NC/1NO PSENmech Yes - 4 - - 33mm
N° de stock RS 279-6393
Référence fabricantXCSTA591
46,60 €
Each
Unité
Screw Key 1NC/2NO Glass Fibre Reinforced PA 240V 250V 1NC/2NO Preventa - - 8 XCSTA - 30mm
N° de stock RS 549-552
Référence fabricantD4NS-4DF
MarqueOmron
23,61 €
Each
Unité
M20 Key 3NC Plastic 240V 250V 3NC - - - 4 D4NS - 30mm
N° de stock RS 394-7457
Référence fabricant440T-MSALE100A
219,00 €
Each
Unité
M5 Key - Stainless Steel - - - Prosafe Yes - 1 440T - 34mm
N° de stock RS 826-3919
Référence fabricant200001
MarqueIDEM
28,80 €
Each
Unité
M20 Key 2NC/1NO Polyester 240V - 2NC Kobra - - 4 KP 1NO 34.5mm
N° de stock RS 792-3089
Référence fabricant440K-T11338
69,50 €
Each
Unité
M20 Key 2NC/1NO Glass Filled PBT 240V 24V 2NC Trojan 5 Yes - 4 440K 1NO 52mm
N° de stock RS 362-2782
Référence fabricantAZ16-12ZI-B1-M20
MarqueSchmersal
66,18 €
Each
Unité
M20 Key 2NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 2NC - Yes - 3 AZ16 1NO 30mm
N° de stock RS 263-3624
Référence fabricantXCSA702
90,20 €
Each
Unité
Screw Key 2NC/1NO Zamak 240V 250V 2NC/1NO Preventa - - 8 XCSA - 44mm
N° de stock RS 178-181
Référence fabricant440K-T11090
51,20 €
Each
Unité
M20 Key 2NC/1NO Glass Filled PBT 240V 24V 2NC Trojan 5 Yes - 4 440K 1NO 52mm
N° de stock RS 296-4669
Référence fabricantXCSPA592
39,10 €
Each
Unité
Screw Key 1NC/1NO Glass Fibre Reinforced PA 240V 250V 1NC/1NO Preventa - - 8 XCSPA - 30mm